公开(公告)号：AU3065699A

公开(公告)日：1999-09-20

申请号：AU3065699

申请日：1999-03-02

Applicant: QUALCOMM INC

Inventor： CICCARELLI STEVEN C ,  YOUNIS SAED G

IPC: G01S19/07 ,  G01S19/11 ,  G01S19/12 ,  G01S19/31 ,  H04B1/26 ,  H04B1/38 ,  H04B1/40 ,  H04B1/62 ,  H04L27/22

Abstract: A receiver that downconverts input signals modulated using first, second, third and fourth modulation formats to a common intermediate frequency range. The first and second modulation formats are transmitted to the receiver in a first frequency range, the third modulation format is transmitted to the receiver in a second frequency range, and the fourth modulation format is transmitted to the receiver in a third frequency range. The input signals are provided to first, second and third band selection filters that respectively select first, second and third frequency ranges. A first downconverter is coupled to an output of the first band selection filter, and downconverts signals from the first frequency range to the common intermediate frequency range. A second downconverter is selectively coupled by a switch to either an output of the second band selection filter or an output of the third band selection filter, and downconverts signals from either the second frequency range or the third frequency range to the common intermediate frequency range. The second downconverter has an input coupled to a frequency doubling circuit. Switching circuitry selectively couples one of either a first oscillating signal from a voltage controlled oscillator (VCO) having a VCO frequency range or a second oscillating signal at a second frequency that is outside the VCO frequency range to an input of the first downconverter and an input of the frequency doubling circuit.

公开(公告)号：AU1633099A

公开(公告)日：1999-06-28

申请号：AU1633099

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： YOUNIS SAED G ,  BAZARJANI SEYFOLLAH S ,  CICCARELLI STEVEN C

IPC: H03M1/18 ,  H03M3/02 ,  H04B1/10 ,  H04B1/16

Abstract: A programmable dynamic range receiver which provides the requisite level of performance at reduced power consumption. The SIGMA DELTA ADC within the receiver is designed with one or more loops. Each loop provides a predetermined dynamic range performance. The loops can be enabled or disabled based on the required dynamic range and a set of dynamic range thresholds. The SIGMA DELTA ADC is also designed with adjustable bias current. The dynamic range of the SIGMA DELTA ADC varies approximately proportional to the bias current. By adjusting the bias current, the required dynamic range can be provided by the SIGMA DELTA ADC with minimal power consumption. A reference voltage of the SIGMA DELTA ADC can be descreased when high dynamic range is not required, thereby allowing for less bias current in the SIGMA DELTA ADC and supporting circuitry. The dynamic range of the SIGMA DELTA ADC is a also function of the oversampling ratio which is proportional to the sampling frequency. High dynamic range requires a high oversampling ratio. When high dynamic range is not required, the sampling frequency can be lowered.

公开(公告)号：CA2312958A1

公开(公告)日：1999-06-17

申请号：CA2312958

申请日：1998-12-08

Applicant: QUALCOMM INC

Inventor： CICCARELLI STEVEN C ,  BAZARJANI SEYFOLLAH S ,  YOUNIS SAED G

IPC: H03M1/18 ,  H03M3/02 ,  H04B1/10 ,  H04B1/16

Abstract: A programmable dynamic range receiver which provides the requisite level of performance at reduced power consumption. The .SIGMA..DELTA. ADC within the receiver is designed with one or more loops. Each loop provides a predetermined dynamic range performance. The loops can be enabled or disabled based on the required dynamic range and a set of dynamic range thresholds. The .SIGMA..DELTA. ADC is also designed with adjustable bias current. The dynamic range of the .SIGMA..DELTA. ADC varies approximately proportional to the bias current. By adjusting the bias current, the required dynamic range can be provided by the .SIGMA..DELTA. ADC with minimal power consumption. A reference voltage of the .SIGMA..DELTA. ADC can be decreased when high dynamic range is not required, thereby allowing for less bias current in the .SIGMA..DELTA. ADC and supporting circuitry. The dynamic range of the .SIGMA..DELTA. ADC is a also function of the oversampling ratio which is proportional to the sampling frequency. High dynamic range requires a high oversampling ratio. When high dynamic range is not required, the sampling frequency can be lowered.

公开(公告)号：WO02076116A2

公开(公告)日：2002-09-26

申请号：PCT/US0207314

申请日：2002-03-11

Applicant: QUALCOMM INC

Inventor： YOUNIS SAED G

IPC: H04M1/02 ,  H04M1/00 ,  H04M1/21 ,  H04M1/66 ,  H04M1/725 ,  H04W84/14 ,  H04W88/02 ,  H04Q7/00

CPC classification number: H04W88/02 ,  H04M1/66 ,  H04M1/72516 ,  H04W84/14

Abstract: A method and system for disabling a mobile unit to handle a call processing function, after being away from its charging unit longer than a predetermined time period, allows a service provider to limit the mobility of the mobile unit with respect to its companion charging unit. Consequently, the service provider may limit the mobility of the mobile unit in a limited area, such as in a wireless local loop.

Abstract translation: 一种用于禁止移动单元处理呼叫处理功能的方法和系统，在远离其计费单元长于预定时间段之后允许服务提供商限制移动单元相对于其伴随充电单元的移动性。 因此，服务提供商可以在诸如无线本地环路的有限区域中限制移动单元的移动性。

公开(公告)号：WO0241595A3

公开(公告)日：2002-07-11

申请号：PCT/US0147158

申请日：2001-11-05

Applicant: QUALCOMM INC

Inventor： SIMIC EMILIJA M ,  YOUNIS SAED G ,  FILIPOVIC DANIEL F

IPC: H03G1/00 ,  H04L25/06 ,  H04L27/38 ,  H04L27/36 ,  H03G3/20

CPC classification number: H03G1/0088 ,  H04L25/06 ,  H04L27/3863

Abstract: Techniques to rotate the phase of a received signal to compensate for phase change or discontinuity introduced by circuit elements located directly in the receive signal path. One or more control signals are received, with each control signal being provided to adjust a particular characteristic of one or more circuit elements associated with the receive signal path. A phase rotation corresponding to an operating state defined by the control signals is then determined, and the phase of the received signal is rotated by an amount related to the determined phase rotation. In some designs, the phase rotation is performed on digitized inphase IIN and quadrature QIN samples to generate phase rotated IROT and QROT samples. The phase rotation can be performed by a complex multiply (after DC offset compensation) and, for ease of implementation, can be performed digitally in discrete increments (e.g., 90 DEG increments).

Abstract translation: 旋转接收信号的相位以补偿由直接位于接收信号路径中的电路元件引入的相位变化或不连续性的技术。 接收一个或多个控制信号，其中提供每个控制信号以调整与接收信号路径相关联的一个或多个电路元件的特定特性。 然后确定对应于由控制信号定义的操作状态的相位旋转，并且接收信号的相位旋转与所确定的相位旋转相关的量。 在一些设计中，相位旋转对数字化的同相IIN和正交QIN样本进行，以产生相位旋转的IROT和QROT样本。 相位旋转可以通过复乘（在DC偏移补偿之后）执行，并且为了便于实现，可以以离散增量（例如，90度增量）进行数字地执行。

公开(公告)号：WO0186316A3

公开(公告)日：2002-10-10

申请号：PCT/US0114991

申请日：2001-05-08

Applicant: QUALCOMM INC

Inventor： PATRICK CHRISTOPHER ,  YOUNIS SAED G

IPC: G01S1/00 ,  G01S7/40 ,  G01S19/03 ,  G01S19/23 ,  H03J7/04 ,  H03L1/00 ,  H03L1/02 ,  H03L7/06 ,  H03L7/18 ,  H04B1/707 ,  H04L27/00 ,  G01S1/02

CPC classification number: G01S19/235 ,  H03J7/04 ,  H03L1/00 ,  H03L1/026 ,  H03L7/18 ,  H04B1/707 ,  H04L2027/0016

Abstract: The frequency error of an oscillator is minimized by characterizing the oscillator. A reference signal from an external source containing a minimal frequency error is provided to an electronic device. The external signal is used as a reference frequency to estimate the frequency error of an internal frequency source. The electronic device monitors parameters that are determined to have an effect on the frequency accuracy of the internal frequency source. Temperature is one parameter known to have an effect on the frequency of the internal frequency source. The electronic device collects and stores the values of the parameters as well as the corresponding output frequency or frequency error of the internal frequency source. The resultant characterization of the internal frequency source is used to compensate the internal frequency source when the internal frequency source is not provided the external reference signal.

Abstract translation: 振荡器的频率误差通过表征振荡器来最小化。 来自包含最小频率误差的外部源的参考信号被提供给电子设备。 外部信号用作参考频率来估计内部频率源的频率误差。 电子设备监视被确定为对内部频率源的频率精度产生影响的参数。 温度是已知对内部频率源的频率有影响的一个参数。 电子设备收集和存储参数值以及相应的内部频率源的输出频率或频率误差。 当内部频率源未提供外部参考信号时，内部频率源的结果用于补偿内部频率源。

公开(公告)号：WO0186809A3

公开(公告)日：2002-03-07

申请号：PCT/US0114993

申请日：2001-05-08

Applicant: QUALCOMM INC

Inventor： PATRICK CHRISTOPHER ,  YOUNIS SAED G

IPC: H03L7/06 ,  H03J7/04 ,  H04B1/16 ,  H03L1/02

CPC classification number: H03J7/04

Abstract: The frequency error of an oscillator is minimized by characterizing the operating environment of the oscillator. An electronic device monitors parameters that are determined to have an effect on the frequency accuracy of the internal frequency source. Temperature is one parameter known to have an effect on the frequency of the internal frequency source and a primary contributor to device temperature is the RF Power Amplifier (PA). The electronic device collects and stores the activity level of the PA. The effective PA duty cycle over a predetermined period of time is calculated. The LO operating environment is stabilized by operating the PA at the calculated duty cycle when the LO is required to operate in a high stability mode.

Abstract translation: 通过表征振荡器的工作环境，使振荡器的频率误差最小化。 电子设备监视被确定为对内部频率源的频率精度产生影响的参数。 温度是已知的对内部频率源的频率有影响的参数之一，器件温度的主要贡献者是RF功率放大器（PA）。 电子设备收集和存储PA的活动级别。 计算预定时间段内的有效PA占空比。 当LO需要在高稳定性模式下工作时，通过以计算的占空比操作PA来稳定LO操作环境。